Need EGCG COA and sample documents? Match HPLC method, batch number, sample code, packing and MOQ before supplier approval.
Requirements
This B2B guide helps purchasing, QA and product development teams prepare supplier questions before samples or quotation. Use the EGCG 98% product page as the main commercial page, then confirm specification, COA, sample, packing and destination details with the supplier.
Selection Criteria
| Review point | Buyer input | Why it matters |
|---|---|---|
| COA identity | Material name, EGCG target, batch number and sample code. | Links the document to the physical sample. |
| Method wording | HPLC method note and assay field wording. | Method wording supports supplier comparison. |
| Physical review | Appearance, color, odor, particle size and flow. | Physical fields help sample approval. |
| Document package | Specification sheet, COA, method note, packing and export support. | A complete file shortens QA review. |
| RFQ inputs | Quantity, MOQ expectation, packing size and destination market. | Commercial inputs move the project toward quotation. |
Practical Recommendation
Use this guide as a pre-RFQ worksheet. If the specification is fixed, send the target assay, powder behavior and document list first. If the grade is still open, ask for available specification options with representative COA and sample lot details.
Sample Review vs Bulk RFQ
| Dimension | Sample review | Bulk RFQ |
|---|---|---|
| Main purpose | Check physical behavior, document fit and application match. | Confirm commercial supply, packing, lead time and export needs. |
| Buyer input | Application, sample quantity, target specification and COA needs. | Quantity, MOQ expectation, packing size and destination market. |
| Limit | Needs later commercial confirmation. | Should follow document or sample approval when the specification is strict. |
Related Product Pages
- EGCG 98% Supplier – Main page for EGCG COA and sample request.
- Green Tea Extract Supplier – Adjacent marker extract page.
- Bulk Matcha Powder Supplier – Adjacent green tea ingredient page.
RFQ Checklist
- Sample code and COA batch number.
- HPLC method and assay wording.
- Specification sheet and physical fields.
- Packing, storage and export file needs.
- MOQ, lead time and destination market.
Related Sourcing Pages
- Plant Extract HPLC COA Review Guide for category-level comparison.
- EGCG 98% product page for product-level samples and quotation.
- Contact HERBSEA with application, sample, COA and RFQ details.
FAQ
Review material identity, EGCG assay, HPLC method wording, batch number, sample code, physical fields, packing and supplier details.
It is less reliable. Method wording should be aligned before comparing assay values.
Include application, target specification, sample quantity, COA needs, packing, MOQ expectation and destination market.
Summary
Before supplier comparison, align material identity, application, target specification, COA fields, sample plan, MOQ, packing and destination market. Clear inputs help suppliers respond with usable samples and quotation details.
Download or request the ingredient RFQ checklist from HERBSEA.